Genetics: X Linked Genes

In fruit flies, eye color is a sex linked trait

(R)

is a sex linked trait. Red is dominant to white.

1. What are the sexes and eye colors of

le sexes and eye colors of flies with the following genotypes:

XX

XRY

X 'Y

X - linked genes are present on X chromosome and not on Y chromosome that's why called as X-linked genes.

Red is dominant to white and this gene is X - linked gene so it will be present on X-chromosome.

XX Red eyes female

XRY Red eye male (gene on X chromosome is dominant for red)

X 'Y white eyes male (recessive gene for white colour)